Results.

<p>Panel A shows the observers’ accuracies in all 16 conditions. There were significant pre-cueing advantages for both the color and orientation tasks regardless of whether each task was about object features or statistical properties. Panel B shows the average pre-cueing advantages for the color and orientation tasks. The predictions are given to illustrate the predicted directions of effects and are not meant to be numerically precise. It is clear that the results of the experiment are consistent with the same-cost account of the encoding of statistical properties and inconsistent with the cost-free account of the encoding of statistical properties. Error bars show within-subject 95% confidence intervals [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0131191#pone.0131191.ref022" target="_blank">22</a>].